name: Build & Release

on:
  push:
    tags: ['v*']
  workflow_dispatch:
    inputs:
      version:
        description: 'Release version (e.g. 1.2.0)'
        required: true

env:
  OBS_VERSION: '32.1.0'
  OBS_DEPS_VERSION: '2025-08-23'
  PLUGIN_NAME: 'easy-irl-stream'

jobs:
  # ============================================================
  #  Windows Build
  # ============================================================
  build-windows:
    runs-on: windows-latest
    steps:
      - uses: actions/checkout@v6

      - name: Setup MSVC
        uses: ilammy/msvc-dev-cmd@v1
        with:
          arch: x64

      - name: Determine version
        id: version
        shell: bash
        run: |
          if [ "${{ github.event_name }}" == "push" ]; then
            echo "version=${GITHUB_REF_NAME#v}" >> $GITHUB_OUTPUT
          else
            echo "version=${{ github.event.inputs.version }}" >> $GITHUB_OUTPUT
          fi

      - name: Clone OBS headers
        shell: bash
        run: |
          git clone --depth 1 --branch ${{ env.OBS_VERSION }} \
            --filter=blob:none --sparse \
            https://github.com/obsproject/obs-studio.git deps/obs-studio
          cd deps/obs-studio
          git sparse-checkout set libobs frontend/api deps/w32-pthreads

      - name: Create obsconfig.h
        shell: powershell
        run: |
          @"
          #pragma once
          #define OBS_DATA_PATH "data"
          #define OBS_PLUGIN_PATH "obs-plugins/64bit"
          #define OBS_PLUGIN_DESTINATION "obs-plugins/64bit"
          #define OBS_INSTALL_PREFIX "C:/Program Files/obs-studio"
          #define OBS_RELEASE_CANDIDATE 0
          #define OBS_BETA 0
          "@ | Out-File -Encoding ASCII "deps/obs-studio/libobs/obsconfig.h"

      - name: Download OBS deps (FFmpeg)
        shell: powershell
        run: |
          $url = "https://github.com/obsproject/obs-deps/releases/download/${{ env.OBS_DEPS_VERSION }}/windows-deps-${{ env.OBS_DEPS_VERSION }}-x64.zip"
          Invoke-WebRequest -Uri $url -OutFile deps/obs-deps.zip -UseBasicParsing
          Expand-Archive -Path deps/obs-deps.zip -DestinationPath deps/obs-deps -Force

      - name: Download Qt6 deps
        shell: powershell
        run: |
          $url = "https://github.com/obsproject/obs-deps/releases/download/${{ env.OBS_DEPS_VERSION }}/windows-deps-qt6-${{ env.OBS_DEPS_VERSION }}-x64.zip"
          Invoke-WebRequest -Uri $url -OutFile deps/qt6.zip -UseBasicParsing
          Expand-Archive -Path deps/qt6.zip -DestinationPath deps/qt6 -Force

      - name: Download OBS binaries
        shell: powershell
        run: |
          $url = "https://github.com/obsproject/obs-studio/releases/download/${{ env.OBS_VERSION }}/OBS-Studio-${{ env.OBS_VERSION }}-Windows-x64.zip"
          Invoke-WebRequest -Uri $url -OutFile deps/obs-bin.zip -UseBasicParsing
          Expand-Archive -Path deps/obs-bin.zip -DestinationPath deps/obs-bin -Force

      - name: Generate import libraries
        shell: powershell
        run: |
          $outDir = "deps/obs-libs"
          New-Item -ItemType Directory -Force -Path $outDir | Out-Null
          Write-Host "=== OBS binary directory structure ==="
          Get-ChildItem deps/obs-bin -Recurse -Directory | ForEach-Object { Write-Host $_.FullName }
          foreach ($dllName in @("obs", "obs-frontend-api", "w32-pthreads")) {
              $dll = Get-ChildItem -Path "deps/obs-bin" -Filter "$dllName.dll" -Recurse -ErrorAction SilentlyContinue | Select-Object -First 1
              if (-not $dll) { throw "Could not find $dllName.dll in deps/obs-bin" }
              Write-Host "Found: $($dll.FullName)"
              $raw = (& dumpbin /exports $dll.FullName 2>&1) | Out-String
              $lines = $raw -split "`r?`n"
              $defLines = @("LIBRARY ""$dllName""", "EXPORTS")
              $capture = $false
              foreach ($line in $lines) {
                  if ($line -match "ordinal\s+hint\s+RVA\s+name") { $capture = $true; continue }
                  if ($capture -and $line -match "^\s*Summary") { break }
                  if ($capture -and $line -match "^\s+(\d+)\s+[0-9A-Fa-f]+\s+[0-9A-Fa-f]+\s+(\S+)") {
                      $defLines += ("    " + $Matches[2])
                  }
              }
              $exportCount = $defLines.Count - 2
              Write-Host "  $dllName exports: $exportCount"
              if ($exportCount -lt 1) { throw "No exports found in $dllName.dll - dumpbin parsing failed" }
              $defLines -join "`n" | Out-File -Encoding ASCII "$outDir/$dllName.def" -NoNewline
              & lib /nologo /def:"$outDir/$dllName.def" /out:"$outDir/$dllName.lib" /machine:x64
              if (-not (Test-Path "$outDir/$dllName.lib")) { throw "Failed to create $dllName.lib" }
              $libSize = [math]::Round((Get-Item "$outDir/$dllName.lib").Length / 1KB, 1)
              Write-Host "  $dllName.lib size: $libSize KB"
          }

      - name: Build plugin
        shell: powershell
        run: |
          cmake -S . -B build -G Ninja `
            -DCMAKE_BUILD_TYPE=RelWithDebInfo `
            -DCMAKE_C_COMPILER=cl `
            -DCMAKE_CXX_COMPILER=cl `
            -DOBS_SOURCE_DIR="deps/obs-studio" `
            -DOBS_LIB_DIR="deps/obs-libs" `
            -DFFMPEG_DIR="deps/obs-deps" `
            -DQT6_DIR="deps/qt6" `
            -DPLUGIN_VERSION_OVERRIDE="${{ steps.version.outputs.version }}"
          cmake --build build --config RelWithDebInfo

      - name: Create portable zip
        shell: powershell
        run: |
          $ver = "${{ steps.version.outputs.version }}"
          New-Item -ItemType Directory -Force "release" | Out-Null
          $dir = "staging/easy-irl-stream"
          New-Item -ItemType Directory -Force "$dir/obs-plugins/64bit" | Out-Null
          Copy-Item "build/easy-irl-stream.dll" "$dir/obs-plugins/64bit/"
          Compress-Archive -Path "$dir/*" -DestinationPath "release/easy-irl-stream-$ver-windows-x64.zip"

      - name: Build installer
        shell: powershell
        run: |
          choco install innosetup -y --no-progress | Out-Null
          $ver = "${{ steps.version.outputs.version }}"
          & "C:\Program Files (x86)\Inno Setup 6\iscc.exe" `
            /DMyAppVersion=$ver installer/installer.iss

      - name: Upload artifacts
        uses: actions/upload-artifact@v6
        with:
          name: windows-release
          path: release/*

  # ============================================================
  #  Linux Build
  # ============================================================
  build-linux:
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v6

      - name: Determine version
        id: version
        shell: bash
        run: |
          if [ "${{ github.event_name }}" == "push" ]; then
            echo "version=${GITHUB_REF_NAME#v}" >> $GITHUB_OUTPUT
          else
            echo "version=${{ github.event.inputs.version }}" >> $GITHUB_OUTPUT
          fi

      - name: Install dependencies
        run: |
          sudo add-apt-repository ppa:obsproject/obs-studio -y
          sudo apt-get update
          sudo apt-get install -y \
            libobs-dev \
            libavformat-dev libavcodec-dev libavutil-dev \
            libswscale-dev libswresample-dev \
            qt6-base-dev \
            libcurl4-openssl-dev libxkbcommon-dev \
            cmake ninja-build pkg-config

      - name: Setup OBS frontend headers
        id: frontend
        run: |
          # Use system header if available, otherwise clone matching version
          if pkg-config --cflags obs-frontend-api 2>/dev/null; then
            echo "Found obs-frontend-api via pkg-config"
            echo "cmake_arg=" >> $GITHUB_OUTPUT
          elif [ -f /usr/include/obs/obs-frontend-api.h ]; then
            echo "Found obs-frontend-api.h in system includes"
            echo "cmake_arg=" >> $GITHUB_OUTPUT
          else
            SYS_VER=$(pkg-config --modversion libobs | cut -d. -f1-3)
            echo "Cloning OBS $SYS_VER frontend headers..."
            git clone --depth 1 --branch "$SYS_VER" \
              --filter=blob:none --sparse \
              https://github.com/obsproject/obs-studio.git deps/obs-studio
            cd deps/obs-studio
            git sparse-checkout set frontend/api
            echo "cmake_arg=-DOBS_FRONTEND_INCLUDE_DIR=deps/obs-studio/frontend/api" >> $GITHUB_OUTPUT
          fi

      - name: Build plugin
        run: |
          cmake -S . -B build -G Ninja \
            -DCMAKE_BUILD_TYPE=RelWithDebInfo \
            -DPLUGIN_VERSION_OVERRIDE="${{ steps.version.outputs.version }}" \
            ${{ steps.frontend.outputs.cmake_arg }}
          cmake --build build

      - name: Package
        run: |
          ver="${{ steps.version.outputs.version }}"
          mkdir -p release
          mkdir -p staging/obs-plugins
          cp build/easy-irl-stream.so staging/obs-plugins/
          cd staging
          tar czf ../release/easy-irl-stream-$ver-linux-x86_64.tar.gz *

      - name: Upload artifacts
        uses: actions/upload-artifact@v6
        with:
          name: linux-release
          path: release/*

  # ============================================================
  #  Create GitHub Release
  # ============================================================
  release:
    needs: [build-windows, build-linux]
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v6

      - name: Determine version
        id: version
        shell: bash
        run: |
          if [ "${{ github.event_name }}" == "push" ]; then
            echo "version=${GITHUB_REF_NAME#v}" >> $GITHUB_OUTPUT
            echo "tag=${GITHUB_REF_NAME}" >> $GITHUB_OUTPUT
          else
            echo "version=${{ github.event.inputs.version }}" >> $GITHUB_OUTPUT
            echo "tag=v${{ github.event.inputs.version }}" >> $GITHUB_OUTPUT
          fi

      - name: Download all artifacts
        uses: actions/download-artifact@v7
        with:
          path: artifacts

      - name: Create release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.version.outputs.tag }}
          name: Easy IRL Stream v${{ steps.version.outputs.version }}
          draft: false
          prerelease: false
          generate_release_notes: true
          body: |
            ## Installation

            ### Windows (Installer — recommended)
            1. Download **`easy-irl-stream-${{ steps.version.outputs.version }}-windows-installer.exe`**
            2. Run the installer — it auto-detects your OBS installation
            3. Restart OBS

            ### Windows (Manual)
            1. Download **`easy-irl-stream-${{ steps.version.outputs.version }}-windows-x64.zip`**
            2. Extract into your OBS Studio folder (e.g. `C:\Program Files\obs-studio\`)
            3. Restart OBS

            ### Linux
            1. Download **`easy-irl-stream-${{ steps.version.outputs.version }}-linux-x86_64.tar.gz`**
            2. Extract to `/usr/lib/obs-plugins/` and `/usr/share/obs/obs-plugins/`
            3. Restart OBS
          files: |
            artifacts/windows-release/*
            artifacts/linux-release/*